Studi Pemanfaatan Bahan Pengemulsi Berbasis Minyak Kelapa Untuk Produk Film Lateks Pekat Karet Alam Dengan Agen Vulkanisasi Sulfur Dan Dikumil Peroksida
| Main Author: | Muis, Yugia |
|---|---|
| Other Authors: | Wirjosentono, Basuki, Marpongahtun, Bhuana, Krishna Surya |
| Format: | Doctoral |
| Bahasa: | ind |
| Subjects: | |
| Online Access: |
http://repository.usu.ac.id/handle/123456789/31279 |
Daftar Isi:
- Emulsifying ingredient commonly used for latex on rubber plantations is ammonium laurate (AL). Unfortunately, this agent had to be imported from abroad with the high price. The usage of AAL combined with ALS as an emulsifier for natural rubber latex has already been done. Both of the chemicals were added to the concentrated latex with the various concentration of 0 v/v.%; 0,03 v/v.%; 0,05 v/v.%; 0.07 v/v.% and 0.09 v/v.% with the storage time of 0; 5;10; 15; 20 and 25 days. In this work, AL is used as standard. The use of this emulsifier on the concentrated latex material provided optimum value of MST at concentration of 0.07 v/v.% with storage time of 10-25 days and the outcome is in compliance with ASTM standards and ISO 2004. Natural rubber latex films used in this work were vulcanised using sulfur by drying it at a temperature of 1000C for 30 minutes. At the same treatment the films were vulcanised using dicumil peroxide at 1300C. The resulting film are characterised in term of their mechanical properties, morphology (SEM), swelling index, as well as FTIR. The results of mechanical tests showed that the optimum tensile strength was obtained at the addition of emulsifiers AL at 0.07 0 v/w.% of 1.09 MPa and the elongation at break of 783%. Swelling index test decreased on the addition of emulsifiers AL and AAL until a minimum value of 1.80 mm and 1.79 mm. Morphological characteristics showed that without the addition of emulsifiers formed aggregate increases. This result is different when compared with the addition of emulsifiers. FTIR spectra did not show any chemical interaction between the molecules of rubber and emulsifying agent and there is no significant change in structure.
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